net/mlx5: remove extra check on Rx

Removing this check improves performance as VLAN and CRC stripping are
enabled most of the time.

Convert MLX5_CQE_VLAN_STRIPPED to network order to speed up the check
instead of doing it on the completion queue entry field.

Signed-off-by: Nelio Laranjeiro <nelio.laranjeiro@6wind.com>
Acked-by: Adrien Mazarguil <adrien.mazarguil@6wind.com>

diff --git a/drivers/net/mlx5/mlx5_rxtx.c b/drivers/net/mlx5/mlx5_rxtx.c
index fae9d27..2e208bf 100644 (file)
--- a/drivers/net/mlx5/mlx5_rxtx.c
+++ b/drivers/net/mlx5/mlx5_rxtx.c
@@ -2041,23 +2041,19 @@ mlx5_rx_burst(void *dpdk_rxq, struct rte_mbuf **pkts, uint16_t pkts_n)
                                                mlx5_flow_mark_get(mark);
                                }
                        }
-                       if (rxq->csum | rxq->csum_l2tun | rxq->vlan_strip |
-                           rxq->crc_present) {
-                               if (rxq->csum) {
-                                       pkt->packet_type =
-                                               rxq_cq_to_pkt_type(cqe);
-                                       pkt->ol_flags |=
-                                               rxq_cq_to_ol_flags(rxq, cqe);
-                               }
-                               if (ntohs(cqe->hdr_type_etc) &
-                                   MLX5_CQE_VLAN_STRIPPED) {
-                                       pkt->ol_flags |= PKT_RX_VLAN_PKT |
-                                               PKT_RX_VLAN_STRIPPED;
-                                       pkt->vlan_tci = ntohs(cqe->vlan_info);
-                               }
-                               if (rxq->crc_present)
-                                       len -= ETHER_CRC_LEN;
+                       if (rxq->csum | rxq->csum_l2tun) {
+                               pkt->packet_type = rxq_cq_to_pkt_type(cqe);
+                               pkt->ol_flags |= rxq_cq_to_ol_flags(rxq, cqe);
+                       }
+                       if (rxq->vlan_strip &&
+                           (cqe->hdr_type_etc &
+                            htons(MLX5_CQE_VLAN_STRIPPED))) {
+                               pkt->ol_flags |= PKT_RX_VLAN_PKT |
+                                       PKT_RX_VLAN_STRIPPED;
+                               pkt->vlan_tci = ntohs(cqe->vlan_info);
                        }
+                       if (rxq->crc_present)
+                               len -= ETHER_CRC_LEN;
                        PKT_LEN(pkt) = len;
                }
                DATA_LEN(rep) = DATA_LEN(seg);